#include <string.h>

#include <gint/display.h>
#include <gint/keyboard.h>

#include "fsctl/menu.h"
#include "fsctl/fugue.h"
#include "fsctl/fugue/cluster.h"
#include "fsctl/fugue/utils.h"
#include "fsctl/utils/fs_table.h"
#include "fsctl/utils/display.h"

//---
// internals
//---

/* internal information */
static int clus_idx = 0;

/* fat_cluster_is_valid() : check cluster information */
static int fat_cluster_is_valid(fugue_fs_t *fs, int idx)
{
    switch (fugue_cluster_is_valid(fs, idx))
    {
        case 0:
            return C_WHITE;
        default:
            return C_RED;
    }
}

//---
// Public
//---

/* fat_menu_init() : init menu */
void fat_menu_init(void)
{
    clus_idx = 0;
}

/* fat1_menu_display() : display menu */
void fat_menu_display(void)
{
    fugue_fs_t fs;
    uint16_t *table;
    int idx;

    fs_table_dtitle();
    if (fs_table_info(&fs, NULL, NULL) != 0)
        return;

    idx = clus_idx;
    table = fs._private.fat1;
    for (int y = 1 ; y < 18 ; y++)
    {
        _printXY(0, y, "%p", &table[idx]);
        for (int x = 0 ; x < 6 ; x++)
        {
            _lrectXY(x, y, fat_cluster_is_valid(&fs, idx));
            _lrectTextXY(x, y, FAT_WORD(table[idx]));
            idx += 1;
        }
    }
}

/* fat_menu_keyboard() : handle keyboard */
void fat_menu_keyboard(int key)
{
    switch (key)
    {
        case KEY_SHIFT:
            clus_idx += 6;
            break;
        case KEY_ALPHA:
            clus_idx -= 6;
            break;
        case KEY_EXIT:
            clus_idx = 0;
            break;
        case KEY_DOWN:
            clus_idx += 6 * 17;
            break;
        case KEY_UP:
            clus_idx -= 6 * 17;
            break;
        case KEY_LEFT:
            fs_table_select_left();
            break;
        case KEY_RIGHT:
            fs_table_select_right();
            break;
    }
    if (clus_idx < 0)
        clus_idx = 0;
}